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#include <vapi/vapi_safe.h>
#include <stdlib.h>
#include <stdio.h>
#define APP_NAME "hicn_plugin"
#define MAX_OUTSTANDING_REQUESTS 4
#define RESPONSE_QUEUE_SIZE 2
pthread_mutex_t *mutex = NULL;
vapi_ctx_t g_vapi_ctx_instance = NULL;
u32 count = 0;
int lock = 0;
vapi_error_e vapi_connect_safe(vapi_ctx_t *vapi_ctx_ret, int async) {
vapi_error_e rv = VAPI_OK;
while (!__sync_bool_compare_and_swap(&lock, 0, 1));
if (!g_vapi_ctx_instance && !mutex)
{
rv = vapi_ctx_alloc(&g_vapi_ctx_instance);
if (rv != VAPI_OK)
goto err;
mutex = malloc(sizeof(pthread_mutex_t));
if (!mutex)
goto err_mutex_alloc;
if (pthread_mutex_init(mutex, NULL) != 0) {
printf("Mutex init failed\n");
goto err_mutex_init;
}
}
if (!count)
{
rv = vapi_connect(g_vapi_ctx_instance, APP_NAME, NULL,
MAX_OUTSTANDING_REQUESTS, RESPONSE_QUEUE_SIZE,
async ? VAPI_MODE_NONBLOCKING : VAPI_MODE_BLOCKING, true);
if (rv != VAPI_OK)
goto err_vapi;
count++;
}
*vapi_ctx_ret = g_vapi_ctx_instance;
while (!__sync_bool_compare_and_swap(&lock, 1, 0));
return rv;
err_vapi:
vapi_ctx_free(g_vapi_ctx_instance);
err_mutex_init:
free(mutex);
err_mutex_alloc:
err:
while (!__sync_bool_compare_and_swap(&lock, 1, 0));
return VAPI_ENOMEM;
}
vapi_error_e vapi_disconnect_safe() {
pthread_mutex_lock(mutex);
vapi_error_e rv = VAPI_OK;
pthread_mutex_unlock(mutex);
return rv;
}
void vapi_lock() {
pthread_mutex_lock(mutex);
}
void vapi_unlock() {
pthread_mutex_unlock(mutex);
}
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